The long-term objective of this study is to identify the best strategies for implementing the IHD guidelines to improve guideline adherence and provider acceptance. The specific objectives of the study are to: 1) describe the temporal aspects of guideline acceptance and adherence over three periods of time: pre-implementation, post-implementation of general strategies, and post- implementation of targeted strategies; 2) assess the relative effectiveness of targeted intervention strategies on guideline adherence; 3) identify the relationships among provider beliefs, attitudes, and their intentions to use guidelines; 4) identify the costs associated with implementation of general and targeted implementation strategies; and 5) describe provider satisfaction with targeted implementation strategies.